Ethereum (ETH), launched in 2015 by Vitalik Buterin, redefined blockchain with smart contracts, enabling a universe of decentralized applications (dApps). By March 22, 2025, its shift to Proof-of-Stake (PoS) via "The Merge" has cut energy use by over 99%, addressing past criticisms while boosting scalability. Ethereum powers DeFi giants like Uniswap, NFT marketplaces like OpenSea, and more, with Layer-2 solutions like Arbitrum slashing fees and speeding transactions. ETH’s price thrives on staking demand and developer activity, reflecting its central role in Web3. Yet, competition from faster blockchains like Solana and Avalanche keeps Ethereum on its toes, demanding constant upgrades. Its true power lies in its vast, passionate community—thousands of developers worldwide build on Ethereum, ensuring its influence endures. In 2025, as blockchain expands into gaming, identity, and beyond, Ethereum remains the beating heart of decentralized innovation, proving its adaptability and vision.